Granted Patent
Utility
US 6,389,922 · App. 09/503,573
Control for drive motors for a self-propelled machine
Inventor:
Daniel J. Krieger
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Feb 14, 2000
Inventor
Daniel J. Krieger
Assignee (at issue)
CLARK EQUIPMENT COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.